docs: def price_rounding(price, decimals=2):
      """Takes a decimal price and rounds to a number of decimal places"""
      try:
          exponent = D('.' + decimals * '0')
      except InvalidOperation:
          # Currencies with no decimal places, ex. JPY, HUF
          exponent = D()
      return price.quantize(exponent, rounding=ROUND_UP)